Category Archive for: ‘Exploit Development’
Disarming and Bypassing EMET 5.1
Last week Microsoft released EMET 5.1 to address some compatibility issues and strengthen mitigations to make them more resilient to attacks and bypasses. We, of course, were curious to see if our EMET 5.0 disarming technique has been addressed by the latest version of the toolkit.
Read More →
Disarming EMET v5.0
In our previous Disarming Emet 4.x blog post, we demonstrated how to disarm the ROP mitigations introduced in EMET 4.x by abusing a global variable in the .data section located at a static offset. A general overview of the EMET 5 technical preview has been recently published here.
Read More →
Symantec Endpoint Protection 0day
In a recent engagement, we had the opportunity to audit a leading Antivirus Endpoint Protection solution, where we found a multitude of vulnerabilities. Some of these made it to CERT, while others have been scheduled for review during our upcoming AWE course at Black Hat 2014, Las Vegas. Ironically, the same software that was meant to protect the organization under review was the reason for its compromise.
Read More →
Disarming Enhanced Mitigation Experience Toolkit (EMET)
With the emergence of recent Internet Explorer Vulnerabilities, we’ve been seeing a trend of EMET recommendations as a path to increasing application security. A layered defense is always helpful as it increases the obstacles in the path of an attacker. However, we were wondering how much does it really benefit? How much harder does an attacker have to work to bypass these additional protections? With that in mind, we started a deep dive into EMET.
Read More →
NDPROXY Local SYSTEM exploit CVE-2013-5065
In the past few days there has been some online chatter about a new Windows XP/2k3 privilege escalation, well documented by FireEye. Googling around, we came across a Twitter message which contained a link to a Chinese vulnerability analysis and PoC.
Read More →
Fun with AIX Shellcode and Metasploit
In one of our recent pentests, we discovered an 0day for a custom C application server running on the AIX Operating System. After debugging the crash, we discovered that the bug could lead to remote code execution and since we don’t deal very often with AIX exploitation, we decided to write an exploit for it. The first steps were accomplished pretty quickly and we successfully diverted the execution flow by jumping to a controlled buffer. At this point, we thought we could easily generate some shellcode from MSF and enjoy our remote shell.
Read More →
CA ARCserve – CVE-2012-2971
On a recent penetration test, we encountered an installation of CA ARCserve Backup on one of the target systems that piqued our interest. Like most “good” enterprise applications, ARCserve has processes that are running as SYSTEM so naturally, we went straight to work looking for vulnerabilities.
Read More →
FreePBX Exploit Phone Home
During a routine scan of new vulnerability reports for the Exploit Database, we came across a single post in full disclosure by Martin Tschirsich, about a Remote Code Execution vulnerability in FreePBX. This vulnerability sounded intriguing, and as usual, required verification in the EDB. At …
Read More →
MS11-080 Exploit – A Voyage into Ring Zero
Every patch Tuesday, we, like many in the security industry, love to analyze the released patches and see if any of them can lead to the development of a working exploit. Recently, the MS11-080 advisory caught our attention as it afforded us the opportunity to play in the kernel and try to get a working privilege escalation exploit out of it.
Read More →
Advanced Windows Exploitation Updated
Our Advanced Windows Exploitation (AWE) live course in Columbia, Maryland is fast approaching with a start-date of October 24. Not only is the first time we have offered this training outside of BlackHat, it is also the first time we are able to offer a full 5 days of training and a limited number of seats are still available for this intense course.
Read More →
